NAMES OF ELEMENTS IN THE SKETCH

HELLO,EVERYONE.I HAVE A PROBLEM HERE.IN THE PICTURE I POSTED,THERE ARE NAMES OF EVERY ELEMENT OF SKETCH,WHEN I SELECT IT BUILDDING A PLANE.BUT,I COULD NOT SEE THE NAMES WHEN I BUILD THE SKETCH.IF I HAVE TWO ELEMENTS IN THE SAME POSITIONS,HOW WOULD I KNOW WHICH ELEMENT I HAVE SELECTED?

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